I bought some miniature momentary pushbutton switches on e bay that were rated 6A120V & 3 A 240V. There was no DC rating. My question using a 16.5 VAC 40VA transformer feeding a 5000UF CDU what would be the ballpark amperage & Voltage feed to the PL10 coil?. The coils are part of a diode matrix of 3 3way turnouts. I am worried that the amperage to the coil may be too high for the momentary switch.
A second question being that the switch is momentary would the high coil current (I don`t know if it is high but assume it is) hurt the contacts of this switch>
Thanks
Bob D
Bob D As long as you surface as many times as you dive you`ll be alive to read these posts.
You should not have any trouble or cause any damage to the pushbuttons with the current being drawn by the Peco switch machines. With the capacitve discharge unit the current drops to almost nothing and the micro burst of current used won't damage the button. Peco also makes a low current version of the same switch machine. I don't know offhand what the part number is but I have a couple of them thrown with a Digitrax DS64 with power from the DCC buss.
Bob,
As long as the bar contacts in the switch do a clean make/break, you should have no problems. I see you are going to use a CDU - Something really needed with twin-coil switch machines. Back in the late 60's I used the small Kadee push buttons - way to small. Even the R/S miniature momentary toggles will tack unless you have use a CDU(as I found out!).
Jim
Modeling BNSF and Milwaukee Road in SW Wisconsin
WHat happens with the CDU is that the break current when you let off the button is actually quite low - limited by the CDU in the same way that if the button gets stuck, it won't fry the switch motor. The CDU delviers a quick high power jolt but then limits the current.
--Randy
Modeling the Reading Railroad in the 1950's
Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.
With normally,open,momentary push buttons,,,you won't have any problem's,,,you probably,use them for less than a second...
Cheers,
Frank